Express the following numbers in standard form :
`4500000`

Answer

To express the number `4500000` in standard form, we follow these steps:

### Step 1: Identify the first non-zero digit
The first non-zero digit in `4500000` is `4`.

### Step 2: Place the decimal point after the first digit
We place the decimal point after the first digit, which gives us `4.5`.

### Step 3: Count the number of places the decimal has moved
Initially, the decimal point is at the end of the number (after the last zero). We need to count how many places we move the decimal point to get from the end of the number to just after the first digit.

In `4500000`, we move the decimal point 6 places to the left:
- From the end of the number (after the last zero) to just after `4` is 6 places.

### Step 4: Write the number in standard form
Now we express this as:
\[ 4.5 \times 10^6 \]
Here, `10^6` indicates that we moved the decimal point 6 places to the left.

### Final Answer
Thus, the standard form of `4500000` is:
\[ 4.5 \times 10^6 \]

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